Postpartum Bleeding stopping & coming back. Normal?

I gave birth almost 3 weeks ago (3 weeks Monday) and I had stopped bleeding about one week and a half later. Right now I went to go pee & I peed A LOT of old brown blood and little clots starting coming out. I put a pad and I filled up the pad really quickly. Now the nurses told me to only worry if the blood was bright red which it isn’t but I feel like it’s still a lot. I didn’t even bleed this much after giving birth. I’m going to call my doctor in the morning and make an appointment but I just want to know if it’s normal since I’m only scaring myself by trying to googling 🙃🙃